US7175801B2 - Method for producing a porous titanium material article - Google Patents
Method for producing a porous titanium material article Download PDFInfo
- Publication number
- US7175801B2 US7175801B2 US10/513,294 US51329404A US7175801B2 US 7175801 B2 US7175801 B2 US 7175801B2 US 51329404 A US51329404 A US 51329404A US 7175801 B2 US7175801 B2 US 7175801B2
- Authority
- US
- United States
- Prior art keywords
- titanium
- powder
- sintering
- substrate
- hydride
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
- B22F3/11—Making porous workpieces or articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
- B22F3/11—Making porous workpieces or articles
- B22F3/1121—Making porous workpieces or articles by using decomposable, meltable or sublimatable fillers
- B22F3/1137—Making porous workpieces or articles by using decomposable, meltable or sublimatable fillers by coating porous removable preforms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
- B22F3/11—Making porous workpieces or articles
- B22F3/1143—Making porous workpieces or articles involving an oxidation, reduction or reaction step
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
- B22F7/002—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of porous nature
- B22F7/004—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of porous nature comprising at least one non-porous part
Definitions
- the subject invention relates to a method for producing a porous titanium material article.
- Porous means a porosity between 10 and 90 vol. %.
- Such an article can comprise both a 3-dimensional and a 2-dimensional article.
- a support for a photocatalyst is given or a product in which a large surface area is required.
- Other non exhaustive examples are electrodes, capacitors, fuel cells, electrolysers, structural parts and the like.
- Processing massive titanium is generally known in the art and no difficulties are encountered presently.
- porous titanium This is different for producing porous titanium. It is possible to obtain porous titanium which has however a very limited strength. In the above applications high porosity, high surface area; corrosion resistance and weight are of importance as well as good mechanical properties.
- porous titanium has been produced by sintering titanium metal powder. At elevated sintering temperature the titanium powder is very sensitive to a clean atmosphere during processing. It has been found that titanium powder is very aggressive at elevated temperature resulting in a surface layer for example a titanium oxide or titanium carbide layer. As soon as such a layer or an other layer is formed sintering is hampered because adhesion of adhesive powder particles is impaired.
- U.S. Pat. No. 4,206,516 discloses a method for providing a porous surface layer on a cast titanium substrate. To that end a slurry of pure titanium hydride is provided on the substrate. By thermal decomposition titanium hydride particles convert in titanium metal. The slurry is provided by spraying. Because pure titanium hydride particles are used, quite some shrinkage is to be expected after sintering.
- U.S. Pat. No. 2,254,549 discloses a composition comprising 60–90% of a base metal not being titanium, a low melting temperature binder, which can comprise copper and titanium and metal hydride. The binder will be present in the final product.
- U.S. Pat. No. 3,855,638 discloses a surgical prosthetic device whereon a solid metallic material substrate a porous coating is adhered.
- the coating is realized starting from an aqueous slurry which is dried and sintered in a hydrogen atmosphere.
- U.S. Pat. No. 3,855,638 discloses a surgical prostetic device whereon a solid metallic material substrate a porous coating is adhered.
- the coating is realised starting from an aqueous slurry which is dried and sintered in a hydrogen atmosphere.
- U.S. Pat. No. 3,950,166 discloses the use of either titanium or titanium hydride and no mixtures thereof.
- the abstract of the Japanese patent specification 2000-017301 discloses a sintered compact which is not porous because of a higher than 95% sintered density.
- a high percentage (35–95 wt %) titanium hydride powder is added to titanium powder.
- U.S. Pat. No. 5,863,398 discloses a method for realising an object by sputtering.
- the subject invention aims to provide an improved method for producing a titanium material article having increased mechanical properties.
- titanium hydride decomposes at relatively low temperature and very aggressive free hydride ions result adhering to any non-titanium component present at sintering. This prevents titanium compositions to be formed at the surface of the titanium powder material so that a clean titanium powder material is subjected to sintering at elevated temperature resulting in optimum sintering results.
- Titanium hydride decomposes at relatively low temperature at about 288° C. and any contaminants present such as oxygen or carbon are intercepted by free hydrides (hydrogen ions) resulting.
- a further advantage of the method according to the invention is that it is possible to keep the temperature of sintering relatively low for example below 1000° C. The sintering process lasts between 1 and 1000 minutes in particular about 0.5–1 hour. It is possible with the method according to the invention to accurately adjust the porosity of the product to be obtained.
- an organic binder which will evaporate during sintering or is fired in previous step. As indicated above any carbon resulting having the tendency to react with titanium is catched away by hydrogen ions. In contrast to metal binders such an organic binder is only used for giving shape to the article and is completely removed at sintering.
- Vacuum is adjusted according to requirement and will be generally between 0.1 and 10 exp.( ⁇ 6) atmosphere i.e. relatively low.
- a foam is provided which is impregnated with the titanium metal—titanium hydride powder after this powder is brought into suspension.
- the foam is fired and the subsequent structure is subjected to a sintering step.
- An other proposal is to subject the powder mixture to a pressing step before sintering.
- This pressing step can be uni-axial or can comprise cold isostatic pressure.
- Preferably pure titanium (grade 1–12) is used.
- the pressed article is sintered on a substrate.
- Said substrate can comprise a molybdenum plate, which is coated with a (hexagonal) boron nitride spray for improved adhesion.
- Other techniques for producing a sponge titanium structure are feasible.
- tape casting is a possibility.
- a casting paste is produced from pure titanium powder, titanium hydride and an organic binder.
- Foil/tape are cast for example with a doctor blade on a non-adhesive flat support such as a flat Teflon support.
- the binder is removed by heating up to 600° C. without the presence of oxygen. Carbon is made ineffective by the effect of decomposing titanium hydride.
- the foil/tape is sintered in the presence of reducing agent.
- the titanium material can be one of the materials as mentioned above.
- the organic binder can be an organic polymer binder such as polyvinyl butyral, meth-acrylate emulsion, etc. or one or more organic solvents (ethanol, isopropanol, toluene, terpineol etc.), organic dispersant (Menhaden oil, Corn oil, Glycerol trioleate, glycerol tristearate, oleic acid etc.), organic plasticiser (glycerine, dibuthyl phtalate, polyethylene glycol etc), release agent (stearic acid, etc), homogenizer (diethyl ether, cyclohexane, etc).
- organic polymer binder such as polyvinyl butyral, meth-acrylate emulsion, etc. or one or more organic solvents (ethanol, isopropanol, toluene, terpineol etc.), organic dispersant (Menhaden oil, Corn oil, Gly
- a foil/tape on a non-adhesive surface solvent After preparing a foil/tape on a non-adhesive surface solvent it can be dried at room temperature in air and excess solvent can be removed. The dry tape/foil can easily be removed from the supporting surface and cut to the required dimension. The mechanical strength is sufficient for transferral. Subsequently the tape/foil is supported on a metal such as molybdenum or tungsten coated with hexagonal BN suspension or zirconia powders suspension and then heat-treated in a neutral atmosphere up to 600° C. to pyrolyse all organic components. During this heating titanium hydride and more particular hydride become effective. Subsequently sintering is realised in a temperature range of 600–1600° C. in either a neutral atmosphere (argon, nitrogen) or a reducing atmosphere with hydrogen and an inert gas at more or less lowered pressure.
- argon, nitrogen argon, nitrogen
- a reducing atmosphere with hydrogen and
- Titanium powder ( ⁇ 325 mesh) was mixed with 7 wt % solution of PVA polymer (20 wt % concentration) and cylinders of 300 mm in diameter and 10 mm high were pressed in an uniaxial press under a pressure of 100 MPa.
- the samples were dried at the temperature of 80° C. for 2 h in an oven and then sintered in a vacuum oven on the molybdenum plate coated with a thin layer of hexagonal boron nitride.
- the sintering process was performed in a vacuum oven at 1300° C. for 2 h in the presence of the TiH 2 reducing agent in the quantity of 0.1 wt % to the total weight of the sample.
- a 40 vol. % aqueous slurry of titanium powder was prepared using as raw material the titanium powder ( ⁇ 325 mesh), water as a solvent and 5 wt % methylcellulose as a binder.
- the viscosity of the titanium slurry was approximately 2 cPa ⁇ s.
- the cubic shape samples of sizes 2.5 ⁇ 2.5 ⁇ 2.5 cm 3 from the polyurethane foam with 20 ppi were impregnated with the slurry.
- the excess of slurry was squeezed from the samples in a rolling press.
- the samples were dried at the temperature of 85° C. for 2 h in an electrically heated oven and then sintered in a vacuum oven in the presence of TiH 2 (reducing agent) at 1000° C. for 1 h.
- the shrinkage of samples was in the range of 15–16%, density of 0.45 g/cm 3 and open porosity of 90 vol %.
- titanium powder ( ⁇ 325 mesh) 55 wt % titanium hydrate 0.01 wt % binder system B-33305 (from FERRO) 45 wt % (Polyvinyl Butyral based binder system using toluene/ethanol solvents; binder solids —22.4 wt %, resin/plasticizer ratio —1.7:1, Viscosity —450 cPs).
Abstract
Description
-
- Composition of the paste for tape casting:
titanium powder (−325 mesh) | 55 wt % | ||
titanium hydrate | 0.01 wt % | ||
binder system B-33305 (from FERRO) | 45 wt % | ||
(Polyvinyl Butyral based binder system using toluene/ethanol solvents; binder solids —22.4 wt %, resin/plasticizer ratio —1.7:1, Viscosity —450 cPs).
-
- All components of the paste were mixed by shaking in a Turbula mixer for 45 min. and then tape casted on the glass plate coated with Teflon tape. The viscosity of the binder system was approximately 450 cPa·s. The doctor blade system was used for forming a tape with the thickness of 0.5 mm and width of 30 cm.
- The tape was dried in ambient atmosphere for 4 hours and then 1 hour in an oven at the temperature of 60° C.
- The tape was cut for samples of sizes 12×12 cm2. The samples were located on the molybdenum plates coated with hexagonal BN spray and then sintered in an electric oven between two Mo plates separated by spacers under vacuum at a temperature of 1000° C. for 1 hour. The rate of heating: 200° C./h, rate of cooling: together with the oven.
Claims (10)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL1020534A NL1020534C2 (en) | 2002-05-03 | 2002-05-03 | Method for manufacturing a porous object from titanium material. |
PCT/NL2003/000327 WO2003092933A1 (en) | 2002-05-03 | 2003-05-05 | Method for producing a porous titanium material article |
Publications (2)
Publication Number | Publication Date |
---|---|
US20050175495A1 US20050175495A1 (en) | 2005-08-11 |
US7175801B2 true US7175801B2 (en) | 2007-02-13 |
Family
ID=29398570
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/513,294 Expired - Fee Related US7175801B2 (en) | 2002-05-03 | 2003-05-05 | Method for producing a porous titanium material article |
Country Status (14)
Country | Link |
---|---|
US (1) | US7175801B2 (en) |
EP (1) | EP1501650B1 (en) |
JP (1) | JP4219325B2 (en) |
KR (1) | KR100658158B1 (en) |
CN (1) | CN1802228A (en) |
AT (1) | ATE314172T1 (en) |
AU (1) | AU2003224519A1 (en) |
CA (1) | CA2484924A1 (en) |
DE (1) | DE60303027T2 (en) |
DK (1) | DK1501650T3 (en) |
ES (1) | ES2256731T3 (en) |
IL (2) | IL164949A0 (en) |
NL (1) | NL1020534C2 (en) |
WO (1) | WO2003092933A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100183691A1 (en) * | 2009-01-22 | 2010-07-22 | Xiaosong Zhu | Use of Titanium metal fine-particles for increasing the effect of Germicidal medicines used for human skin dermatosis, skin infection and traumatism |
US9555376B2 (en) | 2013-01-26 | 2017-01-31 | Adma Products, Inc. | Multilayer, micro- and nanoporous membranes with controlled pore sizes for water separation and method of manufacturing thereof |
RU2641592C2 (en) * | 2016-04-22 | 2018-01-18 | Федеральное государственное бюджетное образовательное учреждение высшего образования Московский авиационный институт (национальный исследовательский университет) (МАИ) | Method for producing porous products from quick-cooled powders of titanium and its alloys |
Families Citing this family (18)
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JP4513520B2 (en) | 2004-11-15 | 2010-07-28 | 三菱マテリアル株式会社 | Titanium alloy sponge sintered body with excellent compressive strength |
KR100725209B1 (en) * | 2005-12-07 | 2007-06-04 | 박영석 | Powder injection molding method for forming article comprising titanium and titanium coating method |
KR100749396B1 (en) * | 2006-01-04 | 2007-08-14 | 박영석 | Titanium formative product using powder metallurgy and manufacturing method of the same |
US7993577B2 (en) * | 2007-06-11 | 2011-08-09 | Advance Materials Products, Inc. | Cost-effective titanium alloy powder compositions and method for manufacturing flat or shaped articles from these powders |
US8920712B2 (en) | 2007-06-11 | 2014-12-30 | Advanced Materials Products, Inc. | Manufacture of near-net shape titanium alloy articles from metal powders by sintering with presence of atomic hydrogen |
CN104922727B (en) * | 2015-06-30 | 2018-06-19 | 四川大学 | A kind of bioactivity, porous titanium medical embedded material and preparation method thereof |
US11325191B2 (en) | 2016-05-24 | 2022-05-10 | Arcam Ab | Method for additive manufacturing |
US10549348B2 (en) * | 2016-05-24 | 2020-02-04 | Arcam Ab | Method for additive manufacturing |
CN106191493B (en) * | 2016-07-15 | 2018-01-12 | 湖南大学 | A kind of preparation method of powder metallurgy titanium alloy |
CN106735185A (en) * | 2017-03-15 | 2017-05-31 | 攀枝花学院 | Gradient porous titanium and preparation method thereof |
NL2018890B1 (en) | 2017-05-10 | 2018-11-15 | Admatec Europe B V | Additive manufacturing of metal objects |
WO2019009668A1 (en) * | 2017-07-06 | 2019-01-10 | 주식회사 엘지화학 | Method for preparing metal foam |
KR102271297B1 (en) * | 2018-12-12 | 2021-06-29 | 주식회사 포스코 | Composite of titanium-carbon, method of preparing same and sintering materil comprising same |
CN109898004A (en) * | 2019-03-20 | 2019-06-18 | 莱芜职业技术学院 | A kind of high tough titanium carbide-high manganese steel bonded carbide and preparation method and application |
CN110819931B (en) * | 2019-11-29 | 2021-10-12 | 山东交通学院 | Powder-cored welding wire, preparation method and application thereof, porous coating and preparation method thereof |
CN112692287B (en) * | 2021-01-14 | 2023-03-28 | 昆明理工大学 | Preparation method of ordered porous titanium in three-dimensional communicated latticed distribution |
CN113373469A (en) * | 2021-05-31 | 2021-09-10 | 宝武清洁能源有限公司 | Bipolar plate of water electrolysis hydrogen production system and preparation method and application thereof |
DE102021132139A1 (en) | 2021-12-07 | 2023-06-07 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung eingetragener Verein | Method of making a porous sheet or body |
Citations (14)
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US2254549A (en) | 1938-11-12 | 1941-09-02 | Small Louis | Sintered metal composition |
GB1004352A (en) | 1960-12-14 | 1965-09-15 | Gen Electric | Improvements in porous material and method of making such material |
NL6909116A (en) | 1969-06-13 | 1970-12-15 | Titanium slab production | |
JPS5027706A (en) * | 1973-07-13 | 1975-03-22 | ||
US3950166A (en) | 1973-02-07 | 1976-04-13 | Mitsubishi Metal Corporation | Process for producing a sintered article of a titanium alloy |
GB2019442A (en) | 1978-03-30 | 1979-10-31 | Crucible Inc | Method for producing powder metallurgy articles |
US4206516A (en) | 1976-12-15 | 1980-06-10 | Ontario Research Foundation | Surgical prosthetic device or implant having pure metal porous coating |
JPH062006A (en) | 1992-06-18 | 1994-01-11 | Japan Metals & Chem Co Ltd | Production of porous metal |
US5349922A (en) * | 1990-06-13 | 1994-09-27 | General Electric Company | Free standing diamond sheet and method and apparatus for making same |
JPH1030136A (en) * | 1996-07-15 | 1998-02-03 | Toyota Motor Corp | Manufacture of sintered titanium alloy |
JPH1088253A (en) * | 1996-09-09 | 1998-04-07 | Tokin Corp | Production of titanium-nickel alloy sintered compact |
US5863398A (en) | 1996-10-11 | 1999-01-26 | Johnson Matthey Electonics, Inc. | Hot pressed and sintered sputtering target assemblies and method for making same |
JP2000017301A (en) | 1998-06-30 | 2000-01-18 | Aichi Steel Works Ltd | Production of high density titanium sintered compact |
WO2002066693A1 (en) | 2001-02-19 | 2002-08-29 | Isotis N.V. | Porous metals and metal coatings for implants |
Family Cites Families (6)
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JPH07238302A (en) * | 1994-02-25 | 1995-09-12 | Komiya Teku:Kk | Sintered titanium filter and production thereof |
JPH08134508A (en) * | 1994-11-10 | 1996-05-28 | Asahi Tec Corp | Production of porous metal |
JP3707507B2 (en) * | 1996-06-25 | 2005-10-19 | セイコーエプソン株式会社 | Manufacturing method of sintered body |
JP2001158925A (en) * | 1999-11-30 | 2001-06-12 | Injex Corp | Method for producing metallic sintered body and metallic sintered body |
JP2001267163A (en) * | 2000-03-21 | 2001-09-28 | Sumitomo Special Metals Co Ltd | Method for manufacturing rare-earth magnet and base plate for sintering |
JP3566637B2 (en) * | 2000-08-25 | 2004-09-15 | 住友チタニウム株式会社 | Manufacturing method of sintered titanium filter |
-
2002
- 2002-05-03 NL NL1020534A patent/NL1020534C2/en not_active IP Right Cessation
-
2003
- 2003-05-05 AU AU2003224519A patent/AU2003224519A1/en not_active Abandoned
- 2003-05-05 IL IL16494903A patent/IL164949A0/en active IP Right Grant
- 2003-05-05 DK DK03721172T patent/DK1501650T3/en active
- 2003-05-05 DE DE60303027T patent/DE60303027T2/en not_active Expired - Lifetime
- 2003-05-05 EP EP03721172A patent/EP1501650B1/en not_active Expired - Lifetime
- 2003-05-05 CA CA002484924A patent/CA2484924A1/en not_active Abandoned
- 2003-05-05 CN CNA038100320A patent/CN1802228A/en active Pending
- 2003-05-05 JP JP2004501103A patent/JP4219325B2/en not_active Expired - Fee Related
- 2003-05-05 US US10/513,294 patent/US7175801B2/en not_active Expired - Fee Related
- 2003-05-05 KR KR1020047017731A patent/KR100658158B1/en not_active IP Right Cessation
- 2003-05-05 WO PCT/NL2003/000327 patent/WO2003092933A1/en active IP Right Grant
- 2003-05-05 ES ES03721172T patent/ES2256731T3/en not_active Expired - Lifetime
- 2003-05-05 AT AT03721172T patent/ATE314172T1/en not_active IP Right Cessation
-
2004
- 2004-11-01 IL IL164949A patent/IL164949A/en not_active IP Right Cessation
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US2254549A (en) | 1938-11-12 | 1941-09-02 | Small Louis | Sintered metal composition |
GB1004352A (en) | 1960-12-14 | 1965-09-15 | Gen Electric | Improvements in porous material and method of making such material |
NL6909116A (en) | 1969-06-13 | 1970-12-15 | Titanium slab production | |
US3950166A (en) | 1973-02-07 | 1976-04-13 | Mitsubishi Metal Corporation | Process for producing a sintered article of a titanium alloy |
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GB2019442A (en) | 1978-03-30 | 1979-10-31 | Crucible Inc | Method for producing powder metallurgy articles |
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JP2000017301A (en) | 1998-06-30 | 2000-01-18 | Aichi Steel Works Ltd | Production of high density titanium sintered compact |
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Title |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100183691A1 (en) * | 2009-01-22 | 2010-07-22 | Xiaosong Zhu | Use of Titanium metal fine-particles for increasing the effect of Germicidal medicines used for human skin dermatosis, skin infection and traumatism |
US9555376B2 (en) | 2013-01-26 | 2017-01-31 | Adma Products, Inc. | Multilayer, micro- and nanoporous membranes with controlled pore sizes for water separation and method of manufacturing thereof |
RU2641592C2 (en) * | 2016-04-22 | 2018-01-18 | Федеральное государственное бюджетное образовательное учреждение высшего образования Московский авиационный институт (национальный исследовательский университет) (МАИ) | Method for producing porous products from quick-cooled powders of titanium and its alloys |
Also Published As
Publication number | Publication date |
---|---|
ATE314172T1 (en) | 2006-01-15 |
KR20040099477A (en) | 2004-11-26 |
DE60303027T2 (en) | 2006-07-06 |
EP1501650B1 (en) | 2005-12-28 |
JP2005524766A (en) | 2005-08-18 |
DE60303027D1 (en) | 2006-02-02 |
NL1020534C2 (en) | 2003-11-14 |
CA2484924A1 (en) | 2003-11-13 |
IL164949A (en) | 2008-08-07 |
EP1501650A1 (en) | 2005-02-02 |
JP4219325B2 (en) | 2009-02-04 |
AU2003224519A1 (en) | 2003-11-17 |
US20050175495A1 (en) | 2005-08-11 |
DK1501650T3 (en) | 2006-04-18 |
IL164949A0 (en) | 2005-12-18 |
WO2003092933A1 (en) | 2003-11-13 |
ES2256731T3 (en) | 2006-07-16 |
CN1802228A (en) | 2006-07-12 |
KR100658158B1 (en) | 2006-12-15 |
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